Home / 7,913.97-10,920-4,376.50

Finding the Fourth Proportional to 7,913.97, 10,920 and 4,376.50

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Solution

The fourth proportional to 7,913.97, 10,920 and 4,376.50 is: 6,038.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.97 : 10,920 = 4,376.50 : x
  2. Step 2: Convert to fraction form
    7,913.97/10,920 = 4,376.50/x
  3. Step 3: Cross multiply
    7,913.97x = 10,920 × 4,376.50
  4. Step 4: Simplify right side
    7,913.97x = 47,791,380
  5. Step 5: Solve for x
    x = 47,791,380/7,913.97
  6. Step 6: Final answer
    x = 6,038.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.